CN102555846A - Slide rail device for vehicle seat - Google Patents
Slide rail device for vehicle seat Download PDFInfo
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- CN102555846A CN102555846A CN2012100340517A CN201210034051A CN102555846A CN 102555846 A CN102555846 A CN 102555846A CN 2012100340517 A CN2012100340517 A CN 2012100340517A CN 201210034051 A CN201210034051 A CN 201210034051A CN 102555846 A CN102555846 A CN 102555846A
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- China
- Prior art keywords
- right track
- gets
- lower railway
- sphere
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/07—Slide construction
- B60N2/0702—Slide construction characterised by its cross-section
- B60N2/072—Complex cross-section, e.g. obtained by extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/07—Slide construction
- B60N2/0702—Slide construction characterised by its cross-section
- B60N2/0705—Slide construction characterised by its cross-section omega-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/07—Slide construction
- B60N2/0722—Constructive details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/048—Ball or roller bearings with thin walled races, e.g. tracks of sheet metal
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Seats For Vehicles (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
A slide rail device includes a lower rail which has a uniform cross section, an upper rail which has a uniform cross section and is engaged with the lower rail, and a plurality of balls which are installed between the lower and upper rails. The balls include upper-balls and lower-balls. The upper balls are inserted between lower-rail upper-ball contact R-portions formed on the lower-rails and upper-rail upper-ball contact portions formed on the upper-rails, and the lower-balls are inserted between lower-rail lower-ball contact R-portions formed on the lower-rails and the upper-rail lower-ball contact portions formed on the upper-rails. The R-portions are desired to satisfy the conditions of R1 >= 1.1r1 and R2 >= 1.1r2, wherein r1 designates the radius of the lower ball, r2 designates the radius of the upper ball, R1 designates the radius of curvature of the lower-rail lower-ball contact R-portion, and R2 designates the radius of curvature of the lower-rail upper-ball contact R-portion. A radius of the lower-rail lower-ball contact R-portion of the lower rail is greater than that of the lower ball to achieve a good balance between prevention of the cupped performance and scrolling capability of the ball.
Description
The application is that application number is 201110408196.4, and the applying date is on December 9th, 2011, and denomination of invention is divided an application for the Chinese invention patent application of " the slide rail equipment that is used for seat ".
Technical field
The present invention relates to a kind of slide rail equipment, it is used in the position of forward/backward direction adjusted seat.
Background technology
Representative type slide rail equipment (slide rail assembly) thus dispose the lower railway that is fixed to car bottom plate, be fixed to seat and engage getting on the right track and a plurality of spheroid (steel ball) of can on this lower railway, being free to slide with said lower railway, said spheroid be used for reducing friction drag and be installed in get on the right track and lower railway between.Said getting on the right track with each of lower railway all is to be processed the metal of iron (normally based on) and had the unmodified cross-sectional plane by metallic material.Japanese patent application publication No. No.4 discloses such slide rail equipment in 230,945.
In the middle of this known slide rail equipment; Get on the right track and lower railway between the effect of power caused in orbit with the contacted a plurality of points of spheroid on produced bigger power, and this power be through the weight that is sitting in someone (driver or passenger) on the seat get on the right track and lower railway between produce.Therefore, sometimes formed depression in orbit through these spheroids.Because this depression has been damaged the roll capability of spheroid obviously, therefore hope that the formed shape of track can prevent to form in orbit this depression as much as possible.For this reason, in the slide rail equipment of routine, it is identical with the radius of curvature of the spheroid contact portion of each track that the radius of spheroid is set to.That is if the radius of spheroid is identical with the radius of curvature of the spheroid contact portion of each track, then effect surface pressure in orbit is in minimum value how much, thereby the possibility of formation depression in orbit is very little through said spheroid.Yet; Contriver of the present invention has been found that; Go up identical if the radius of spheroid is fabricated at design with the radius of curvature of the spheroid contact portion of each track; Then the roll capability of spheroid worsens sometimes, and no matter there be whether cave in (except the problem of depression) in orbit, thereby make the slide that gets on the right track with respect to lower railway become unstable.
Summary of the invention
As the result that the reason of the slide deficient in stability of slide rail equipment is inquired into; Drawing with after drawing a conclusion; Contriver of the present invention has accomplished the present invention: identical with the radius of curvature of the spheroid contact portion of each track if the radius of spheroid is manufactured into; Then deposit the possibility of the combination that not inadvertently produces this spheroid and track; The radius of curvature of spheroid contact portion that wherein in this combination, causes said track owing to the production tolerance is less than the radius of spheroid, and this has caused that spheroid and track contact with each other on two points, thereby the roll capability of spheroid is caused deterioration.As as known in the art, the dimensional accuracy of spheroid (steel ball) and hardness are all very high, thus exist hardly spheroid self dimensional accuracy tolerances the possibility of roll capability of spheroid.The arc length (angle) of each spheroid contact R part of lower railway is usually greater than the arc length (angle) of each spheroid contact R part that gets on the right track, thus the pole of figure earth effect of the spheroid of lower railway contact R part the roll capability of spheroid.
According to an aspect of the present invention; A kind of slide rail equipment; Comprise: have section of constant cross section lower railway, have section of constant cross section and with said lower railway getting on the right track and a plurality of spheroid of slide joint freely; Said spheroid is installed between said lower railway and said the getting on the right track; Wherein said spheroid comprises a plurality of upper spheres and a plurality of lower sphere, and said upper sphere is inserted in a pair of lower railway upper sphere contact R partial sum that is formed on the said lower railway and is formed on a pair of the getting on the right track between the upper sphere contact portion on said the getting on the right track; Said lower sphere is inserted in a pair of lower railway lower sphere contact R partial sum that is formed on the said lower railway and is formed on a pair of the getting on the right track between the lower sphere contact portion on said the getting on the right track, and meets the following conditions:
R1 >=1.1r1, and
R2≥1.1r2，
Wherein r1 representes the said radius of said lower sphere, and r2 representes the said radius of said upper sphere, and R1 representes the said radius of curvature of said lower railway lower sphere contact R part, and R2 representes the said radius of curvature of said lower railway upper sphere contact R part.
Among said said get on the right track lower sphere contact portion and the said upper sphere contact portion that gets on the right track that gets on the right track; At least the said upper sphere contact portion that gets on the right track is formed the upper sphere contact R part that gets on the right track; This upper sphere contact R that gets on the right track partly is formed in the circular arc that has specific curvature in the cross-sectional plane; And meet the following conditions: R2 ' >=1.1r2; Wherein r2 representes the said radius of said upper sphere, and the said radius of curvature of the said upper sphere contact R part that gets on the right track of R2 ' expression.
The said said lower sphere contact portion that gets on the right track that gets on the right track is formed the lower sphere contact R part that gets on the right track; This lower sphere contact R that gets on the right track partly is formed in the circular arc that has specific curvature in the cross-sectional plane; And meet the following conditions: R1 ' >=1.1r1; Wherein r1 representes the said radius of said lower sphere, and the said radius of curvature of the said lower sphere contact R part that gets on the right track of R1 ' expression.
Said lower railway comprises: the lower railway diapire; A pair of lower railway sidewall, this a pair of lower railway sidewall extends upward from the horizontal relative sidepiece of said lower railway diapire respectively; And a pair of lower railway upper wall, this a pair of lower railway upper wall extends towards the center at the said lower railway of horizontal direction from the upper end of said a pair of lower railway sidewall respectively; Said a pair of lower railway lower sphere contact R partly is connected respectively to said lower railway diapire with said a pair of lower railway sidewall; And said a pair of lower railway upper wall contact R partly is connected respectively to said a pair of lower railway sidewall with said a pair of lower railway upper sphere.
Said getting on the right track comprises: roof gets on the right track; The a pair of sidewall that gets on the right track, this is a pair of, and the sidewall that gets on the right track is extending downwardly between the said a pair of lower railway upper wall in the middle of the said lower railway respectively; And a pair of sphere supports wall that gets on the right track; This is a pair of respectively from the bottom of the said a pair of sidewall that gets on the right track outwards and extend upward to get on the right track the sphere supports wall; The wherein said sphere supports wall that gets on the right track comprises the said lower sphere contact portion and the upper sphere contact portion that gets on the right track of getting on the right track; This lower sphere contact portion that gets on the right track is formed the said lower railway lower sphere contact R part towards contiguous said lower railway, and this upper sphere contact portion that gets on the right track is formed the said lower railway upper sphere contact R part towards contiguous said lower railway.
The present invention also provides a kind of slide rail equipment; Comprise: have section of constant cross section lower railway, have section of constant cross section and with said lower railway getting on the right track and a plurality of spheroid of slide joint freely, said spheroid is installed between said lower railway and said the getting on the right track.Said lower railway comprises: the lower railway diapire; A pair of lower railway sidewall, this a pair of lower railway sidewall extend upward from two ends with respect to the lower railway diapire of horizontal direction respectively; A pair of lower railway upper wall, this a pair of lower railway upper wall extend from the upper end of said a pair of lower railway sidewall towards the center at the said lower railway of horizontal direction respectively; A pair of lower railway lower sphere contact R part, said a pair of lower railway sidewall is connected respectively to said lower railway diapire through this a pair of lower railway lower sphere contact R part; And a pair of lower railway upper sphere contact R part, said a pair of lower railway upper wall is connected respectively to said a pair of lower railway sidewall through this a pair of lower railway upper sphere contact R part.Said getting on the right track comprises: roof gets on the right track; The a pair of sidewall that gets on the right track; This is a pair of, and get on the right track sidewall and the said roof that gets on the right track carries out continuously, and this a pair of get on the right track sidewall respectively from respect to two sides of the said roof that gets on the right track of horizontal direction and between the said a pair of lower railway upper wall to extending below and extend in the middle of the said lower railway; And a pair of sphere supports wall that gets on the right track, this is a pair of respectively from the bottom of the said a pair of sidewall that gets on the right track outwards and extend upward to get on the right track the sphere supports wall.Each of the said a pair of sphere supports wall that gets on the right track all comprises get on the right track the lower sphere contact portion and the upper sphere contact portion that gets on the right track; This lower sphere contact portion that gets on the right track is formed that lower railway lower sphere contact R part adjacent thereto towards a pair of lower railway lower sphere contact R part of said lower railway, and this upper sphere contact portion that gets on the right track is formed that lower railway upper sphere contact R part adjacent thereto towards a pair of lower railway upper sphere contact R part of said lower railway.Said spheroid comprises a pair of upper sphere and a pair of lower sphere, and a pair of lower railway upper sphere that this a pair of upper sphere is installed in said lower railway respectively contacts getting on the right track between the upper sphere contact portion of the R said a pair of sphere supports wall that gets on the right track that gets on the right track of partial sum; Said a pair of lower sphere is installed in said the said of a pair of sphere supports wall that gets on the right track of getting on the right track of a pair of lower railway lower sphere contact R partial sum of said lower railway respectively and gets on the right track between the lower sphere contact portion.The radius of curvature of the said lower railway lower sphere contact R part of said lower railway is greater than the radius of said lower sphere, and the radius of curvature of the lower railway upper sphere of said lower railway contact R part is greater than the radius of said upper sphere.
Notice term " R part " expression lower railway or get on the right track in that part that is formed in the circular arc that has certain radius of curvature in the cross-sectional plane.This curvature can be circular or oval.In addition, the horizontal direction on term " laterally " the expression vehicle-width direction, and term " outwards " expression is from the outside direction of the cross-section center of track.
Although the upper sphere contact portion that gets on the right track of each of a pair of sphere supports wall that gets on the right track can be formed flat surface with the lower sphere contact portion that gets on the right track; But ideally; Each the said at least upper sphere contact portion that gets on the right track at the said a pair of sphere supports wall that gets on the right track that gets on the right track is formed the upper sphere contact R part that gets on the right track, and this upper sphere contact R that gets on the right track partly is formed in the circular arc that has specific curvature in the cross-sectional plane.This be because; Through upper sphere act on a pair of sphere supports wall that gets on the right track power and because the ratio between the relevant antagonistic force that track (the said a pair of sphere supports wall that gets on the right track) distortion causes; Greater than the power that acts on a pair of sphere supports wall that gets on the right track through lower sphere with because the ratio between the relevant antagonistic force that track (the said a pair of sphere supports wall that gets on the right track) distortion causes; Therefore ideally; The upper sphere contact portion that gets on the right track of each sphere supports wall that gets on the right track is formed the above-mentioned upper sphere contact R part that gets on the right track, and its surface pressure is less than the surface pressure of flat surface.In addition since with identical greater than the radius of lower sphere of the radius of curvature of lower railway lower sphere contact R part, the radius of curvature of the upper sphere that gets on the right track contact R part is configured to the radius of curvature greater than upper sphere ideally.
Ideally; The get on the right track lower sphere contact portion of sphere supports wall of said each that gets on the right track also is formed the lower sphere contact R part that gets on the right track (this lower sphere contact R that gets on the right track partly is formed in the circular arc that has specific curvature in the cross-sectional plane), rather than forms flat surface.In this situation, ideally, the said radius of curvature that gets on the right track lower sphere contact R part also is set to the radius greater than lower sphere.
Ideally, meet the following conditions:
R1 >=1.1r1, and R2 >=1.1r2,
More ideally, R1 >=1.2r1, and R2 >=1.2r2
Wherein r1 representes the radius of said lower sphere, and r2 representes the radius of said upper sphere, and R1 representes the radius of curvature of said lower railway lower sphere contact R part, and R2 representes the radius of curvature of said lower railway upper sphere contact R part.Consider the dimension limit of the track during the manufacturing; If R1 and R2 are respectively less than 1.1 times r1 and r2; Although then effect surface pressure has in orbit obtained reduction; But the roll capability of having confirmed spheroid worsens (combination of spheroid and track, the radius of curvature of the spheroid contact portion of its middle orbit not inadvertently produces less than the radius of spheroid).
On the other hand, the higher extreme value of the radius of curvature (R1 or R2) of each spheroid contact R part is determined to be and makes that contact R surface pressure partly becomes to be equal to or less than and considered the surface pressure that rail material allowed with the contacted spheroid of spheroid.
In slide rail equipment according to the present invention; What it is contemplated that is; When said get on the right track receive be applied to this on getting on the right track orthogonal load and when carrying out elastic deformation, each inside face that connects turnings the said upper wall that gets on the right track and said a pair of two of getting on the right track between the sidewall that get on the right track respectively is as imaginary distortion center of turn.In the middle of the embodiment of slide rail equipment according to the present invention; When said get on the right track receive be applied to this on getting on the right track orthogonal load and when carrying out elastic deformation; Each inside face at said get on the right track roof and said a pair of two the connection turnings between the sidewall of getting on the right track of getting on the right track of getting on the right track is as imaginary distortion center of turn; And the said shape of cross section that gets on the right track is determined to be between first line segment and second line segment and defines the outside angle of cut; This first line segment has connected the center of one of them spheroid of said imaginary distortion center of turn and said a pair of lower sphere; This second line segment tangent with one of them spheroid that is associated of said a pair of lower sphere and with the said lower sphere that gets on the right track to contact the R part tangent; The angle of the said angle of cut be in from 80 spend less than 90 the degree scope in, ideally from 80 spending to 88 the degree scope in.
Through utilizing this mode to set the outside angle of cut, can guarantee that a pair of sidewall that gets on the right track is manufactured into can be through lower sphere and inside elastic deformation (that is, elastic deformation on the other side's the direction) mutually.Confirmed, this is a pair of get on the right track sidewall mutually away from reverse on outside distortion may damage the slidably property of slide rail equipment.
If the above-mentioned outside angle of cut is set to angle greater than 90 degree, 30 the load performance of then getting on the right track becomes maximum in theory.Yet; If the outside angle of cut is set to an angle of 90 degrees; Then may not inadvertently produce the combination (the wherein outside angle of cut surpass 90 degree) of spheroid and track owing to the production tolerance, this may cause a pair of get on the right track sidewall mutually away from opposite sense on outwards distortion.
According to the present invention, the radius of curvature of each spheroid of lower railway contact R part is set to the radius greater than the spheroid that is associated at least, and this can obtain a kind of like this slide rail equipment, and the performance that wherein prevents to cave in and the roll capability of spheroid obtain good balance.
Ideally, said lower railway comprises a pair of lower railway internal side wall, and this a pair of lower railway internal side wall is positioned between the said a pair of lower railway sidewall, and this a pair of lower railway internal side wall is respectively from the inner end of said a pair of lower railway upper wall and to extending below.
Ideally, said a pair of each that gets on the right track the sphere supports wall comprises vertical connecting wall, and the said lower sphere contact portion that gets on the right track is connected through this vertical connecting wall with the said upper sphere contact portion that gets on the right track.
Description of drawings
Below will describe the present invention in detail with reference to accompanying drawing, wherein:
Fig. 1 is the longitdinal cross-section diagram according to the embodiment of slide rail equipment of the present invention;
Fig. 2 is the section drawing of the part of getting on the right track shown in Fig. 1, and it has shown the concrete shape of the part that this gets on the right track; And
Fig. 3 shows that pressure of contact surface and spheroid contact the chart of R part radius of curvature (R) divided by the observed data of the relation between the radius (r) of spheroid.
The specific embodiment
Fig. 1 has shown the embodiment according to slide rail equipment 10 of the present invention.This slide rail equipment 10 has the lower railway 20 that is respectively fixed to car bottom plate (not shown) and seat (not shown) and gets on the right track 30; And this slide rail equipment 10 is at lower railway 20 and get on the right track 30 (thereby this lower railway 20 and get on the right track 30 engage one another together can slide relative) between have two types steel ball; That is; Lower sphere 40 and upper sphere 50, they are installed in lower railway 20 and get on the right track between 30.On the section of cutting open along the plane of the bearing of trend that is orthogonal to track 20 and 30, slide rail equipment 10 has symmetrical shape.The diameter of lower sphere 40 is greater than the diameter of upper sphere 50.As as known in the art, two slide rail equipment 10 is used as a pair of (left slide rail equipment and right slide rail equipment) and uses being fixed under the state of vehicle, and lockout mechanism is mounted to this to slide rail equipment with other element.Yet,, therefore will discuss lower railway 20 in the following description and 30 this shape of cross section of getting on the right track because the main concept of this embodiment concentrates on lower railway 20 and 30 the unmodified shape of cross section of getting on the right track.In addition; In the following description; The horizontal direction on the Width of vehicle represented respectively in these terms " laterally "; Term " outwards " expression from lower railway 20 with get on the right track 30 cross-section center and outside direction, term " R part " expression lower railway 20 or that part that is formed in the circular arc that has certain radius of curvature in the cross-sectional plane in 30 of getting on the right track.
Get on the right track and 30 have the roof of getting on the right track 31, a pair of sidewall 32 and a pair of sphere supports wall 33 that gets on the right track of getting on the right track.The roof 31 that gets on the right track of level is fixed to seat.The said a pair of sidewall 32 of getting on the right track carries out continuously with the roof 31 that gets on the right track, and this a pair of sidewall 32 that gets on the right track is extending between a pair of lower railway internal side wall 24 in the middle of the lower railway 20 from two ends (side) of the roof 31 that gets on the right track respectively with respect to horizontal direction.Saidly a pair ofly respectively and outwards and extend upward get on the right track sphere supports wall 33 towards this a pair of lower railway upper wall 23 from the bottom of this a pair of sidewall 32 that gets on the right track.
Each sphere supports wall 33 that gets on the right track has the lower sphere of getting on the right track contact R part 34 in its underpart; This lower sphere contact R part 34 that gets on the right track is formed the lower railway lower sphere contact R part 25 towards contiguous lower railway 20; And this sphere supports wall 33 that gets on the right track has the upper sphere of getting on the right track contact R part 35 above the lower sphere contact R part 34 that gets on the right track, this upper sphere contact R part 35 that gets on the right track is formed the lower railway upper sphere contact R part 26 towards contiguous lower railway 20.Each sphere supports wall 33 that gets on the right track is getting on the right track lower sphere contact R part 34 and get on the right track and has vertical connecting wall 36 between the upper sphere contact R part 35 further, and the lower sphere that gets on the right track contact R part 34 and the upper sphere that gets on the right track contact R part 35 and be connected through this connecting wall 36.
The lower sphere contact R part 34 that gets on the right track of each sphere supports wall 33 that gets on the right track contact in the R part 35 with the upper sphere that gets on the right track each all have curvature; Thereby keep (insertion) between the lower railway lower sphere contact R of get on the right track lower sphere contact R part 34 and vicinity part 25 lower sphere 40, and keep (insertion) to contact between the R part 26 upper sphere 50 at get on the right track upper sphere contact R part 35 and contiguous lower railway upper sphere.Yet the lower sphere contact R part 34 that gets on the right track of each sphere supports wall 33 that gets on the right track contacts the formation curvature of R part 35 with the upper sphere that gets on the right track zone (angle) contacts R part 25 contacts R part 26 curvature that forms with contiguous lower railway upper sphere zone (angle) less than contiguous lower railway lower sphere respectively.Each contiguous lower railway lower sphere contact R part 25 contacts R part 26 and is formed and has extended an angle of 90 degrees with each lower railway upper sphere that is close to; And the bending area (angle) especially little (can be reduced) of the lower sphere contact R part 34 that gets on the right track of each sphere supports wall 33 that gets on the right track, thereby can be substituted by flat surface (flat surface zone).
The radius of curvature R 1 of lower railway lower sphere contact R part 25 contact with the lower sphere that gets on the right track the radius of curvature R 1 in Zone R territory 34 ' in each be defined as radius r 1 greater than lower sphere 40.Similarly, the radius of curvature R 2 of lower railway upper sphere contact R part 26 contact with the upper sphere that gets on the right track the radius of curvature R 2 of R part 36 ' in each be defined as radius r 2 greater than upper sphere 50.Radius of curvature R 1 and radius of curvature R 1 ' can be identical mutually or have Light Difference mutually.Similarly, radius of curvature R 2 and radius of curvature R 2 ' can be identical mutually or have Light Difference mutually.
Fig. 3 is the chart that shows observed data; When it has represented that radius r (r1 or r2) when lower sphere 40 or upper sphere 50 contact ratio between the radius of curvature R (R1, R2, R1 ' or R2 ') of R part (25,26,34 or 35) and changes with spheroid, contact the partly variation of the pressure of contact surface on (25,26,34 or 35) of R at spheroid.As the chart from Fig. 3 can understand, the value that the value that the border of the acute variation of pressure of contact surface is present in (being limited at) R/r (radius of curvature R is divided by radius r) equals 1.1 point and R/r equals between 1.2 the point.Consider that this is true and because the lower railway 20 that the production tolerance causes contacts the variation of R radius of curvature partly with 30 the spheroid of getting on the right track, then through radius of curvature R is set for make its be equal to or greater than about 1.1 times of radius r (that is, R >=1.1r); Be more ideally be equal to or greater than about 1.2 times of radius r (that is, R >=1.2r), can guarantee the failure-free roll capability of lower sphere 40 and upper sphere 50, and no matter the variation of the radius of curvature R of spheroid contact R part 25,26,34 or 35.On the other hand, the higher extreme value of the radius of curvature R (R1 and R2) of each spheroid contact R part (25 and 26) is configured to make that contact R surface pressure partly becomes to be equal to or less than and considered the surface pressure that rail material allowed with the contacted spheroid of spheroid (40 or 50).
Except each lower railway lower sphere contact R part 25 contacts the R part 26 with each lower railway upper sphere, each lower sphere that gets on the right track contacts R part 34 and contacts R part 35 with each upper sphere that gets on the right track each also is that kind that forms the embodiment of above example; Yet each the lower sphere contact R part 34 that gets on the right track each lower sphere contact R part 34 that gets on the right track contacts R part 35 with each upper sphere that gets on the right track in the middle of can be formed flat part especially.On the other hand; Hope that each upper sphere contact R part 35 that gets on the right track is formed the R part of surface pressure less than the surface pressure of the flat surface of above-mentioned embodiment, this is that 35 roles of upper sphere contact R part are related lower spheres 40 of green phase and provide flexible to the upper sphere abutment wall 33 that gets on the right track that is associated because each gets on the right track.
Fig. 2 is used to show 30 the ideal forms under its free state that get on the right track.In the middle of each of get on the right track 30 left side and right-hand part (only shown among Fig. 2 get on the right track 30 left side); When get on the right track 30 receiving put on this orthogonal load of 30 of getting on the right track in, the inside face in the upper wall 31 and the connection corner between the sidewall 32 of getting on the right track has become imaginary distortion center of turn X.30 the shape of cross sections under its free state that get on the right track are determined; Thereby between line segment Y and line segment Z, define the outside angle of cut (cross angle) α; Said line segment Y has connected the center of imaginary distortion center of turn X and the lower sphere 40 that is associated; Said line segment Z and the lower sphere that is associated 40 tangent and with the lower sphere that gets on the right track to contact R part 34 tangent, this α angle is in 80 scopes spent less than 90 degree, it is desirable to more between spending in the scope of 88 degree from 80.Through utilizing this mode to set outside angle of cut α, can guarantee that this is manufactured into the sidewall 32 that gets on the right track can be through lower sphere 40 and inside elastic deformation (that is, elastic deformation on the other side's the direction) mutually.On the contrary, this to get on the right track sidewall 32 mutually away from reverse on outside distortion may damage the slidably property of slide rail equipment 10.
In other words, as line segment Y and line segment Z when at right angles (an angle of 90 degrees) is intersecting each other, 30 the load-carrying properties of getting on the right track become maximum in theory.Yet; 30 are designed such that line segment Y and line segment Z are rectangular and intersecting each other if get on the right track; When 30 the shape of then ought getting on the right track changes owing to the production tolerance; Outside angle of cut α possibly become greater than 90 degree, is easy to outside distortion thereby should can become to the sidewall 32 that gets on the right track, and therefore the slidably property to slide rail equipment 10 has a negative impact.In the middle of this embodiment of slide rail equipment 10, even being defined as to make, the shape of slide rail equipment 10 exists under production tolerance's the situation, outside angle of cut α is always less than 90 degree.The radius of curvature R 1 that 30 the qualifications of this shape under its free state of getting on the right track are independent of lower railway lower sphere contact R part 25 contacts the radius of curvature R 1 of R part 34 ' (this two each all be defined as the radius r 1 greater than lower sphere 40) with the lower sphere that gets on the right track, and is independent of curvature R2 that the lower railway upper sphere contacts R part 26 contacts R part 35 with the upper sphere that gets on the right track radius of curvature R 2 ' (this two each all be defined as the radius r 2 greater than upper sphere 50).
Obviously, much change in the specific embodiment of the present invention that can describe in this article, this modification is within the claimed the spirit and scope of the present invention.It is to be noted that all things that comprise among this paper are exemplary, and be not to be restriction scope of the present invention.
Claims (5)
1. slide rail equipment comprises: have section of constant cross section lower railway, have section of constant cross section and with said lower railway getting on the right track and a plurality of spheroid of slide joint freely, said spheroid is installed between said lower railway and said the getting on the right track,
Wherein said spheroid comprises a plurality of upper spheres and a plurality of lower sphere,
Said upper sphere is inserted in a pair of lower railway upper sphere contact R partial sum that is formed on the said lower railway and is formed on a pair of the getting on the right track between the upper sphere contact portion on said the getting on the right track;
Said lower sphere is inserted in a pair of lower railway lower sphere contact R partial sum that is formed on the said lower railway and is formed on a pair of the getting on the right track between the lower sphere contact portion on said the getting on the right track, and
Meet the following conditions:
R1 >=1.1r1, and
R2≥1.1r2，
Wherein r1 representes the said radius of said lower sphere,
R2 representes the said radius of said upper sphere,
R1 representes the said radius of curvature of said lower railway lower sphere contact R part, and
R2 representes the said radius of curvature of said lower railway upper sphere contact R part.
2. slide rail equipment according to claim 1; Wherein, Among said said get on the right track lower sphere contact portion and the said upper sphere contact portion that gets on the right track that gets on the right track; At least the said upper sphere contact portion that gets on the right track is formed the upper sphere contact R part that gets on the right track, and this upper sphere contact R that gets on the right track partly is formed in the circular arc that has specific curvature in the cross-sectional plane, and
Meet the following conditions:
R2’≥1.1r2，
Wherein r2 representes the said radius of said upper sphere, and
The said radius of curvature of the said upper sphere contact R part that gets on the right track of R2 ' expression.
3. slide rail equipment according to claim 1; Wherein, The said said lower sphere contact portion that gets on the right track that gets on the right track is formed the lower sphere contact R part that gets on the right track, and this lower sphere contact R that gets on the right track partly is formed in the circular arc that has specific curvature in the cross-sectional plane, and
Meet the following conditions:
R1’≥1.1r1，
Wherein r1 representes the said radius of said lower sphere, and
The said radius of curvature of the said lower sphere contact R part that gets on the right track of R1 ' expression.
4. according to each described slide rail equipment of claim 1-3, wherein, said lower railway comprises:
The lower railway diapire;
A pair of lower railway sidewall, this a pair of lower railway sidewall extends upward from the horizontal relative sidepiece of said lower railway diapire respectively; And
A pair of lower railway upper wall, this a pair of lower railway upper wall extend towards the center at the said lower railway of horizontal direction from the upper end of said a pair of lower railway sidewall respectively;
Said a pair of lower railway lower sphere contact R partly is connected respectively to said lower railway diapire with said a pair of lower railway sidewall; And
Said a pair of lower railway upper wall contact R partly is connected respectively to said a pair of lower railway sidewall with said a pair of lower railway upper sphere.
5. slide rail equipment according to claim 4, wherein said getting on the right track comprises:
Roof gets on the right track;
The a pair of sidewall that gets on the right track, this is a pair of, and the sidewall that gets on the right track is extending downwardly between the said a pair of lower railway upper wall in the middle of the said lower railway respectively; And
The a pair of sphere supports wall that gets on the right track, this is a pair of respectively from the bottom of the said a pair of sidewall that gets on the right track outwards and extend upward to get on the right track the sphere supports wall,
The wherein said sphere supports wall that gets on the right track comprises the said lower sphere contact portion and the upper sphere contact portion that gets on the right track of getting on the right track; This lower sphere contact portion that gets on the right track is formed the said lower railway lower sphere contact R part towards contiguous said lower railway, and this upper sphere contact portion that gets on the right track is formed the said lower railway upper sphere contact R part towards contiguous said lower railway.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-277512 | 2010-12-13 | ||
| JP2010277512A JP2012126181A (en) | 2010-12-13 | 2010-12-13 | Slide rail device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104081964A Division CN102555844A (en) | 2010-12-13 | 2011-12-09 | Slide rail device for vehicle seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102555846A true CN102555846A (en) | 2012-07-11 |
Family
ID=46198359
Family Applications (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205125861U Expired - Fee Related CN202399944U (en) | 2010-12-13 | 2011-12-09 | Sliding rail equipment for vehicle seat |
| CN2011104081964A Pending CN102555844A (en) | 2010-12-13 | 2011-12-09 | Slide rail device for vehicle seat |
| CN2012200490986U Expired - Fee Related CN202541355U (en) | 2010-12-13 | 2011-12-09 | Track assembly for automobile seats |
| CN2012200491014U Expired - Fee Related CN202541356U (en) | 2010-12-13 | 2011-12-09 | Slide rail equipment for car seat |
| CN2012100340517A Pending CN102555846A (en) | 2010-12-13 | 2011-12-09 | Slide rail device for vehicle seat |
| CN2012100338752A Pending CN102529754A (en) | 2010-12-13 | 2011-12-09 | Slide rail device for vehicle seat |
Family Applications Before (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205125861U Expired - Fee Related CN202399944U (en) | 2010-12-13 | 2011-12-09 | Sliding rail equipment for vehicle seat |
| CN2011104081964A Pending CN102555844A (en) | 2010-12-13 | 2011-12-09 | Slide rail device for vehicle seat |
| CN2012200490986U Expired - Fee Related CN202541355U (en) | 2010-12-13 | 2011-12-09 | Track assembly for automobile seats |
| CN2012200491014U Expired - Fee Related CN202541356U (en) | 2010-12-13 | 2011-12-09 | Slide rail equipment for car seat |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100338752A Pending CN102529754A (en) | 2010-12-13 | 2011-12-09 | Slide rail device for vehicle seat |
Country Status (5)
| Country | Link |
|---|---|
| US (4) | US20120145869A1 (en) |
| EP (3) | EP2527192A4 (en) |
| JP (1) | JP2012126181A (en) |
| CN (6) | CN202399944U (en) |
| WO (1) | WO2012081380A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105730289B (en) * | 2010-05-28 | 2018-02-13 | 布罗泽汽车部件制造科堡有限公司 | Vertical guide device for automotive seat |
| JP2012126181A (en) * | 2010-12-13 | 2012-07-05 | Shiroki Corp | Slide rail device |
| JP6108783B2 (en) * | 2012-01-24 | 2017-04-05 | シロキ工業株式会社 | Power seat slide device |
| KR101352439B1 (en) * | 2012-07-26 | 2014-01-20 | (주)세고스 | Sliding device for drawer |
| CN102848936A (en) * | 2012-08-29 | 2013-01-02 | 上海沿浦金属制品股份有限公司 | Manual longitudinal sliding rail for car seat |
| JP5900288B2 (en) | 2012-10-30 | 2016-04-06 | アイシン精機株式会社 | Vehicle seat slide device |
| DE102014219866B4 (en) * | 2014-09-30 | 2024-03-21 | Keiper Seating Mechanisms Co., Ltd. | Pair of rails for a vehicle seat, longitudinal adjuster and vehicle seat with longitudinal adjuster |
| CN104354611A (en) * | 2014-10-30 | 2015-02-18 | 苏州中航中振汽车饰件有限公司 | Chassis guiderail bracket of car seat |
| KR20160121816A (en) * | 2015-04-13 | 2016-10-21 | 현대자동차주식회사 | Sliding armrest device for vehicle |
| JP6485248B2 (en) * | 2015-06-24 | 2019-03-20 | トヨタ紡織株式会社 | Vehicle seat |
| JP2018012408A (en) * | 2016-07-20 | 2018-01-25 | アイシン精機株式会社 | Vehicular seat slide device |
| DE102016225822A1 (en) * | 2016-09-21 | 2018-03-22 | Adient Luxembourg Holding S.a.r.l. | Seat rail pair for a vehicle seat |
| CN107830055B (en) * | 2017-11-29 | 2023-12-19 | 佛山市格菲卡金属制品有限公司 | Solid overweight slide rail that bears of eight guide slots |
| FR3086224B1 (en) * | 2018-09-21 | 2021-05-14 | Faurecia Sieges Dautomobile | SLIDE FOR VEHICLE SEAT AND VEHICLE SEAT INCLUDING SUCH A SLIDE |
| CN109383336A (en) | 2018-12-25 | 2019-02-26 | 湖北航嘉麦格纳座椅系统有限公司 | A kind of slide track component of automobile and its seat |
| IT201900000313A1 (en) | 2019-01-09 | 2020-07-09 | Martur Italy Srl | Slider for a vehicle seat with an improved rail configuration |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102529754A (en) | 2012-07-04 |
| CN202541355U (en) | 2012-11-21 |
| CN202399944U (en) | 2012-08-29 |
| CN102555844A (en) | 2012-07-11 |
| US20130341983A1 (en) | 2013-12-26 |
| EP2527192A4 (en) | 2013-08-28 |
| US8398045B2 (en) | 2013-03-19 |
| US20120160981A1 (en) | 2012-06-28 |
| US20120145869A1 (en) | 2012-06-14 |
| WO2012081380A1 (en) | 2012-06-21 |
| JP2012126181A (en) | 2012-07-05 |
| CN202541356U (en) | 2012-11-21 |
| EP2527192A1 (en) | 2012-11-28 |
| EP2549133A1 (en) | 2013-01-23 |
| EP2549134A1 (en) | 2013-01-23 |
| US20120160982A1 (en) | 2012-06-28 |
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Application publication date: 20120711 |